Pickerel Weed
Pontederia cordata
Flowers–Bright purplish blue, including filaments, anthers, and style; crowded in a dense spike; quickly fading; unpleasantly odorous. Perianth tubular, 2-lipped, parted into 6 irregular lobes, free from ovary; middle lobe
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Common Persicaria, Pink Knotweed, or Jointweed; Smartweed
Polygonum pennsylvanicum
Flowers–Very small, pink, collected in terminal, dense, narrow obtuse spikes, 1 to 2 in. long. Calyx pink or greenish, 5-parted, like petals; no corolla; stamens
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